It is on top of the evap can on the back left side of the engine bay
Depends on the make, model and engine
The low pressure service port on your Chevrolet K 1500 air conditioning compressor will be the one closest to the front of the engine compartment. The low pressure service port should be labeled.
The low pressure port is located on the passenger side of the engine compartment. It is toward the back, under the ac drier.
behind the engine coolant reservoir.
The low pressure port for your air conditioning is on the top of your air conditioning system accumulator (can) It is located on the passenger side of your engine, roughly 5 inches or so from your heater/ air conditioning electric fan motor. It has a plastic dust cap covering the valve.
low pressure side on a buick skylark with a 2.4 engine is by the compresor. you get to it from under the car. left side, front side of engine.
right hand side front of engine
Its on top of the a/c accumulator....................
The Ford F1 50 5.8 liter engine does not have a low pressure line. The vehicle is equipped with a low pressure port on the air conditioning compressor.
The 2001 Saturn L200 low pressure port can be found on the air conditioning compressor. The low pressure port will be closest to the front of the engine compartment.
Pontiac low pressure ac portI have a 1998 grand prix gt and the low pressure service valve for the air conditioning in located in the very back of the engine compartment under the windshield.The high pressure is located on the driver side next to the fender.Also you can go to efproducts.com for informational videos on how to use their products to recharge your systems and retro fit the new valves if you need to.hope this helps.
Tire pressure will not cause a check engine light.